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    High surface area sol-gel route prepared hydrogenation catalysts
    3.
    发明授权
    High surface area sol-gel route prepared hydrogenation catalysts 失效
    高表面积溶胶凝胶路线制备氢化催化剂

    公开(公告)号：US06686310B1

    公开(公告)日：2004-02-03

    申请号：US09869631

    申请日：2001-06-28

    申请人： Kostantinos Kourtakis ,  Daniel Campos ,  Leo Ernest Manzer

    发明人： Kostantinos Kourtakis ,  Daniel Campos ,  Leo Ernest Manzer

    IPC分类号： B01J2300

    CPC分类号： B01J23/44 ,  B01J23/462 ,  B01J23/56 ,  B01J23/626 ,  B01J23/6525 ,  B01J23/6567 ,  B01J37/033 ,  B01J37/036

    摘要： This invention concerns novel compositions, useful as hydrogenation catalyst, said compositions comprising metals and metal ions such as ruthenium (Ru) or palladium (Pd) dispersed in and distributed throughout a matrix comprising an inorganic or silicon oxide network. The catalyst may be prepared by the sol-gel method; a solution of at least one catalytic metal compound is added to a solution of at least one metal alkoxide selected from Al, Ti, Nb, Zr, Ta, Si and other inorganic alkoxides, and then gelling the mixture. Promotors such as rhenium (Re), molybdenum (Mo) and tin (Sn) may be added. The catalyst may be used in the reduction of metallic acid or gamma-butyrolactone to tetrahydrofuran (THF) and 1,4-butanediol (BDO).

    摘要翻译： 本发明涉及可用作氢化催化剂的新型组合物，所述组合物包含金属和金属离子如钌（Ru）或钯（Pd），其分散在整个包含无机或氧化硅网络的基质中并分布在其中。 催化剂可以通过溶胶 - 凝胶法制备; 将至少一种催化金属化合物的溶液加入到选自Al，Ti，Nb，Zr，Ta，Si和其它无机醇盐中的至少一种金属醇盐的溶液中，然后使混合物胶凝。 可以加入铼（Re），钼（Mo）和锡（Sn）等促进剂。 该催化剂可用于将金属酸或γ-丁内酯还原成四氢呋喃（THF）和1,4-丁二醇（BDO）。

    Process for regeneration of carbon-supported, rhenium-containing catalysts
    10.
    发明授权
    Process for regeneration of carbon-supported, rhenium-containing catalysts 失效
    含碳载体的含铼催化剂的再生方法

    公开(公告)号：US06225477B1

    公开(公告)日：2001-05-01

    申请号：US09018823

    申请日：1998-02-04

    申请人： Richard Edward Ernst ,  John Byrne Michel ,  Daniel Campos

    发明人： Richard Edward Ernst ,  John Byrne Michel ,  Daniel Campos

    IPC分类号： C07D30756

    CPC分类号： B01J23/92 ,  B01J38/48 ,  B01J38/68

    摘要： This invention relates to a method of improving the catalytic performance of palladium or ruthenium, rhenium-on-carbon hydrogenation catalysts operating in aqueous media where loss of soluble rhenium may result in rapid catalytic failure. A rhenium-containing hydrogenation catalyst comprised of rhenium on a support material is regenerated by first treating the catalyst with aqueous perrhenic acid or potassium perrhenate followed by treating the catalyst under reducing conditions at elevated temperature and pressure. Treatment of the catalyst as described replenishes dispersed fresh finely divided rhenium which enhances the activity of the catalyst while at the same time allowing the operations to be carried out in situ in the hydrogenation reactor or in a side stream reactor with significant savings in reducing reactor down time and precious metal expenses.

    摘要翻译： 本发明涉及一种提高钯或钌，碳酸氢铼催化剂在水介质中的催化性能的方法，其中可溶性铼的损失可导致快速催化失效。 通过首先用高铼酸水溶液或高铼酸钾处理催化剂，然后在还原条件下在升高的温度和压力下处理催化剂，再生由载体材料上的铼组成的含铼氢化催化剂。 如上所述处理催化剂补充分散的新鲜细分的铼，其增强了催化剂的活性，同时允许操作在氢化反应器或侧流反应器中原位进行，显着节省了减少反应器的下降 时间和贵金属费用。